Use when fixing or auditing already-shipped product UI (settings, pricing, theme chrome, book play cards, app shells) — not greenfield landings. Stable layout across enum variants, freemium copy accuracy, whole-card CTAs, multi-accent theme chrome (Mocha/Catppuccin), focus/hover restraint, fix-then-tiered-audit. Also typing-engine chrome (wrong-space glyphs) and SSR client seeds.
